1984年,电推进技术应用最成功的是通信卫星南北位置保持用的增强型电热式肼推力器。该推力器由TRW 和“火箭研究”公司提供,用于八颗 Intelsat-5,一颗 RCA Spacenet 和两颗 RGA Satcom 通信卫星的南北位置保持。目前在同步轨道上总共有40个肼电热式推力器在运行,比冲约300秒,功耗高达500W。NASA 现正在资助研制电热式推力器技术,以便与其他推进技术一起应用。1984年工作重点是评价现有的电阻加热电离式发动机,其推进剂是氢气、氮气和氨气,而不是肼。目前正按计划要求确定其性能、寿命、工作范围以及它与多元电阻加热电离式发动机系统的接口作为空间站、平台和/或自由飞行宇宙飞 In 1984, the most successful application of electric propulsion technology was the enhanced electrothermal hydrazine thruster used to maintain the north-south position of communications satellites. The thrusters were supplied by TRW and Rocket Research Inc. for north-south position keeping of eight Intelsat-5, one RCA Spacenet and two RGA Satcom communications satellites. At present, a total of 40 hydrazine electric thrusters are running on synchronous orbit, with a specific impulse of 300 seconds and a power consumption of 500W. NASA is currently funding the development of electric thruster technology for use with other propulsion technologies. The focus of work in 1984 was to evaluate existing resistance-heating ionisation engines, where the propellants are hydrogen, nitrogen and ammonia rather than hydrazine. It is being planned to determine its performance, longevity, scope of work and its interface with a multi-resistance, electrically heated ionization engine system as a space station, platform and / or free-flying spacecraft